I use android annotations to communicate with the server. In one of the api calls I need to send some text data and an image, say, from gallery.
@Post("/items/addItem.php")
String addItem(Protocol protocol);
How do I attach a MultipartForm with an image along with the post request?
Just use the right Spring converter : FormHttpMessageConverter.
However, this converter only accepts MultiValueMap as method parameter. Please have a look at these two issues: #652 and #660.
If you really want to use any object as parameter, you have to implement your own custom FormHttpMessageConverter
which will handle that by using reflection.